Remove preload support from the MemoryCache

sky/engine/core/fetch/ResourceFetcher.h

 /*
     Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
     Copyright (C) 2001 Dirk Mueller <mueller@kde.org>
     Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
     Copyright (C) 2009 Torch Mobile Inc. http://www.torchmobile.com/
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.
@@ skipping 83 matching lines @@
     bool shouldDeferImageLoad(const KURL&) const;
 
     LocalFrame* frame() const; // Can be null
     FetchContext& context() const;
     Document* document() const { return m_document; } // Can be null
 
     void garbageCollectDocumentResources();
 
     int requestCount() const { return m_requestCount; }
 
-    bool isPreloaded(const String& urlString) const;
-    void clearPreloads();
-    void preload(Resource::Type, FetchRequest&, const String& charset);
-    void printPreloadStats();
-
     void stopFetching();
     bool isFetching() const;
 
     // ResourceLoaderHost
     virtual void incrementRequestCount(const Resource*) override;
     virtual void decrementRequestCount(const Resource*) override;
     virtual void didLoadResource(Resource*) override;
     virtual void didFinishLoading(const Resource*, double finishTime, int64_t encodedDataLength) override;
     virtual void didChangeLoadingPriority(const Resource*, ResourceLoadPriority, int intraPriorityValue) override;
     virtual void didFailLoading(const Resource*, const ResourceError&) override;
@@ skipping 20 matching lines @@
     static const ResourceLoaderOptions& defaultResourceOptions();
 private:
 
     explicit ResourceFetcher(Document*);
 
     bool shouldLoadNewResource(Resource::Type) const;
 
     ResourcePtr<Resource> requestResource(Resource::Type, FetchRequest&);
     ResourcePtr<Resource> createResourceForRevalidation(const FetchRequest&, Resource*);
     ResourcePtr<Resource> createResourceForLoading(Resource::Type, FetchRequest&, const String& charset);
-    void requestPreload(Resource::Type, FetchRequest&, const String& charset);
 
     enum RevalidationPolicy { Use, Revalidate, Reload, Load };
     RevalidationPolicy determineRevalidationPolicy(Resource::Type, const FetchRequest&, Resource* existingResource) const;
 
     void determineRequestContext(ResourceRequest&, Resource::Type);
     ResourceRequestCachePolicy resourceRequestCachePolicy(const ResourceRequest&, Resource::Type);
     void addAdditionalRequestHeaders(ResourceRequest&, Resource::Type);
 
-    bool canRequest(Resource::Type, const KURL&, const ResourceLoaderOptions&, bool forPreload, FetchRequest::OriginRestriction) const;
+    bool canRequest(Resource::Type, const KURL&, const ResourceLoaderOptions&, FetchRequest::OriginRestriction) const;
 
     static bool resourceNeedsLoad(Resource*, const FetchRequest&, RevalidationPolicy);
 
     void notifyLoadedFromMemoryCache(Resource*);
 
     void garbageCollectDocumentResourcesTimerFired(Timer<ResourceFetcher>*);
     void scheduleDocumentResourcesGC();
 
     bool clientDefersImage(const KURL&) const;
     void reloadImagesIfNotDeferred();
 
     HashSet<String> m_validatedURLs;
     mutable DocumentResourceMap m_documentResources;
     Document* m_document;
 
     int m_requestCount;
 
-    OwnPtr<ListHashSet<Resource*> > m_preloads;
-
     Timer<ResourceFetcher> m_garbageCollectDocumentResourcesTimer;
 
     OwnPtr<ResourceLoaderSet> m_loaders;
     OwnPtr<ResourceLoaderSet> m_multipartLoaders;
 
     // Used in hit rate histograms.
     class DeadResourceStatsRecorder {
     public:
         DeadResourceStatsRecorder();
         ~DeadResourceStatsRecorder();
@@ skipping 32 matching lines @@
             m_loader->m_allowStaleResources = m_previousState;
     }
 private:
     ResourceFetcher* m_loader;
     bool m_previousState;
 };
 
 } // namespace blink
 
 #endif